The book is clever funny and it integrates with the whole Harry Potter series. It's great idea to give readers a part of the fiction world - to transfer it from imagination to the reality. These are Harry Potter's schoolbooks - that's how the fictional world meets the real one. The book simply describes the magical creatures that we encounter during reading Rowling's books. But it is done is such a compelling way that a reader really starts to wondering whether it is true or not. Nice idea and well executed.